PCB schematic / PCB layout design / hand soldering / firmware / testing software

Technické parametry

matrix of 64 diodes in 8 x 8 configuration
driven by 8-bit AVR microcontroller ATmega by Atmel
communication with PC: USB to serial UART interface FT230 by FTDI
LED selection by two analog multiplexers driven by the microcontroller

amplitude of the pulses:
- internal 3.3 V
- external power source

pulse duration control:
- generated by microcontroller
- external pulse generator

Vývoj

PCB design: Eagle
AVR firmware: C
Testing PC software: C# Windows Forms [Visual Studio]

Hlavní součástky

Microcontroller: AVR ATMega88
USB-UART: FTDI FT230
Analog matrix switch: Analog Devices ADG738
Analog multiplexer: Analog Devices ADG608